Moisture Microwave sensors

Key Features

Ultra-wide measuring range variations
Total moisture analysis: insensitive to additive, thickness and color variations
More accurate online measurements with less calibration needs

Measuring Method

The microwave measurement method is based on the dielectric constant of materials. Water molecules have a much higher dielectric constant value than fibers and different type of fillers. Frequencies and other measured raw data are analyzed with very sophisticated algorithms. This is possible because of a new, digitally controlled high frequency technology.

Benefits

To process applications such as resin impregnation & pulp drying.

Larger cavity 7250SL model available for pulp mill installations (wet end)
Ultra wide measuring range
Service free construction
Easy and convenient to install and operate
Full range of scanners available
Easy calibration and setup
Insensitive to different types of additives, thickness and color variations
More accurate on-line measurements

Faster on-spec quality and reduced start up waste
Reduction in rejects due to high performing measurements
Minimization of energy consumption by accurate and reliable Moisture and Basis Weight measurements and controls
Machine speeds can be increased on drying limited pulp and paper machines
New optimizing tool for pulp drying lines

Technical Specifications

Sensor Type	7250S	7250C
Construction 1	Double sided	Double sided
Construction 2	Non-contact	Contact
Moisture Range	2 – 60 %	4 – 70 %
MEAS Frequency	40 Hz	80 Hz
Temperature Compensation	Yes	N/A
MEAS gap	13 mm	–
X-Y-Z Compensation	Yes	–
Installation	Scanning /Fixed	Scanning /Fixed

Sensor Type	7250S	7250C
Power consumption	12 W 24 VDC	10 W 24 VDC
Interface Options	Profibus	Profibus
	Modbus	Modbus
	Ethernet	Ethernet
	USB	USB
	2x analog	2x analog
Environmental Conditions	10-60 ℃ 10-95 % RH	10-60 ℃ 10-95 % RH
Liquid Cooling	Optional	Optional